Small Blocks

I would have those 4 bolt main cap bolts go into a blind hole,as well as the timing chain cover bolts. Get rid of those sloppy rocker arms. The oil pump pick up tube would have a bigger inside diameter. Get rid of the freeze plugs that are on both sides of the camshaft. I would design the heads so that there wouldn't be any cracking between the valve seats and the heads would be a closed chamber